Home / 85,668.26-128,417.62-40,610.48

Finding the Fourth Proportional to 85,668.26, 128,417.62 and 40,610.48

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Solution

The fourth proportional to 85,668.26, 128,417.62 and 40,610.48 is: 60,875.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,668.26 : 128,417.62 = 40,610.48 : x
  2. Step 2: Convert to fraction form
    85,668.26/128,417.62 = 40,610.48/x
  3. Step 3: Cross multiply
    85,668.26x = 128,417.62 × 40,610.48
  4. Step 4: Simplify right side
    85,668.26x = 5,215,100,445.04
  5. Step 5: Solve for x
    x = 5,215,100,445.04/85,668.26
  6. Step 6: Final answer
    x = 60,875.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.